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| "Backyard Scientist" - idiocy never fails to astound me |
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| Lord of nothing:
When I watch the Kreosan Guys who one of them hold the Hand between the X-Ray "Lamp" and a Sheet of Glowing stuff under the X-Ray Radiation. Normally on a Medical X-Ray the Radiation is very short (sry I dont know how long exactly). So what are the consequence of for him? Cancer? |
| TimFox:
Physicians used to use "fluoroscopes", where a fluorescent screen was placed between the observer and the patient, and x rays were sent through the patient to the screen. It was necessary to dark-adapt ones eyes before the examination. I shudder to think of the dose to all concerned with these inefficient screens. The modern equivalent uses image-intensifying equipment and enhanced screens (with metal sheets that convert the x-ray photons to electrons that give more light from the screen). If you look at the spectrum of photons from an x-ray tube, you see the characteristic (e.g., K-alpha) lines sticking up from a broad spectrum from Bremsstrahlung that has a definite end-point corresponding to the tube voltage. The mean energy is substantially lower than the voltage, and the lower part of the spectrum is attenuated by "filtration". For medical uses, typically an aluminum filter plate is inserted in the tube window to reduce the low-energy photons, since they are absorbed quickly and don't contribute any useful information to the image, but damage the patient's skin. |
| KaneTW:
--- Quote from: Lord of nothing on August 02, 2020, 12:37:08 pm ---When I watch the Kreosan Guys who one of them hold the Hand between the X-Ray "Lamp" and a Sheet of Glowing stuff under the X-Ray Radiation. Normally on a Medical X-Ray the Radiation is very short (sry I dont know how long exactly). So what are the consequence of for him? Cancer? --- End quote --- Depends on the intensity. Probably nothing at all. |
| TimFox:
One book I consulted about radiation safety had a frontispiece photograph of the hands of Roentgen's chief technician after a career where they were irradiated. Not a pretty sight. |
| Lord of nothing:
::) Stupid Question could the Laser Guy with his "Death Ray" reach the ISS? :o I would say its not a good idea to blind some Astronauts. On the other Hand get some Keyhole Sat out of Business are not a bad idea. :-DD |
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